JPS6438684A - Marking body for searching system - Google Patents
Marking body for searching systemInfo
- Publication number
- JPS6438684A JPS6438684A JP62193294A JP19329487A JPS6438684A JP S6438684 A JPS6438684 A JP S6438684A JP 62193294 A JP62193294 A JP 62193294A JP 19329487 A JP19329487 A JP 19329487A JP S6438684 A JPS6438684 A JP S6438684A
- Authority
- JP
- Japan
- Prior art keywords
- marker
- searching
- coil
- loop
- loop coils
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To always obtain a constant searching level even when a marker changes into any posture, by arranging three loop coils of a marker (marking body) so that the respective loop surfaces cross each other at a right angle. CONSTITUTION:The coil 1 of a marker is constituted by arranging three loop coils 11-13 having the same diameter and the same number of windings so that the loop surfaces thereof cross each other at a right angle. For example, these loop coils 11-13 are connected in series, and a quartz vibrator 2 and a capacitor 3 are connected thereto in parallel to form a parallel resonance circuit which in turn constitutes the searching signal responding means of the marker. By this constitution, even when the coil 1 of the marker is placed in any direction with respect to a searching coil 4, there is no change in the crossing total flux received from the searching coil 4. Therefore, the giving and receiving of a signal can be always performed between the marker and the searching coil 4 at the same level regardless of the laying posture of the marker or even when the laying posture changes after embedding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62193294A JPH087264B2 (en) | 1987-07-31 | 1987-07-31 | Signs for detection systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62193294A JPH087264B2 (en) | 1987-07-31 | 1987-07-31 | Signs for detection systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6438684A true JPS6438684A (en) | 1989-02-08 |
| JPH087264B2 JPH087264B2 (en) | 1996-01-29 |
Family
ID=16305521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62193294A Expired - Fee Related JPH087264B2 (en) | 1987-07-31 | 1987-07-31 | Signs for detection systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087264B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008524588A (en) * | 2004-12-21 | 2008-07-10 | キュー−トラック，コーポレーション | Near-field position measurement system and method |
-
1987
- 1987-07-31 JP JP62193294A patent/JPH087264B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008524588A (en) * | 2004-12-21 | 2008-07-10 | キュー−トラック，コーポレーション | Near-field position measurement system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087264B2 (en) | 1996-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |